With this perk, Raul's rate of fire with revolvers and lever action firearms is 33% faster than normal.
- .357 Magnum revolver
- .44 Magnum revolver
- 5.56mm pistol
- Brush gun
- Cowboy repeater
- Hunting revolver
- Ranger Sequoia
- Trail carbine
- Old Vaquero shares the same Vault boy image as Math Wrath.
- "Vaquero" is Spanish for "cowboy".
- Raul is the only male companion with a perk that upgrades his stats.
- The perk does nothing for Raul's default firearm, which makes this a useless perk unless the player plans on supplying Raul with weapons.
- PC Playstation 3 Xbox 360 Despite meeting the description of weapons covered by the perk, Old Vaquero does not affect the Abilene Kid LE BB gun, BB gun, That Gun, or Raul's .44 Magnum revolver.